Cylinder head for sleeve-valve internal-combustion engines



Aug. 2,1927.

E. R. BURTNETT CYLINDER HEAD FOR SLEEVE VALVE lNTERNAL COMBUSTION ENGINES 2 Sheets-Sheet 1 Filed Nov. 50, 1926 f l@ Z S www Z on za INVENTOI? Aug. 2, 1927.

E. R. BURTNETT CYLINDER HEAD EOE SLEEVE VALVE INTERNAL cbMBUsVIoN ENGINES Filed Nov. 5D, 1926 ZSheets-Sheet 2 INVENTOR Patented Aug. A2i, 1927.

Unirse-STATES PATENTOFFICE.

EvE'aETrr E.. EURTNETT, OE Los ANGELES,` CALIFORNIA, AssIGNOE, BY DIRECTy `ANI) MEsNE ASSIGNMENTS, fro THE aUToIvIO'rIvEvALvEs CORPORATION, yOE RENO,

NEVADA, AKCORPORATION OF NEVADA. l

CYLINDER IIEAnEOEsLEEvE-VALVE INTERNAL-COMBUSTION ENGINES. y i

Application filed November 3Q, 19726. Serial No. 151,645. 'i

f My invention relates to iinproven'ients in cylinder heads for sleeve valve internal combustion engines of the `general type disclosed inmy co-pending U. S. patent application Serial Number 146,606, filed Nov. 6, 1926, the principalfobject of 'my invention' being to provide a cylinder `head for sleeve valve engines in which the sleeve is arranged yto operate in a telescopic" manner over the periphery of thecylinder head and to provide means of establishing a fresh fuel charge passage communication to the periphery of the cylinder head through the cylinder head to facilitate the sleeve valve normally employed as an inlet and exhaust valve to a combustion chamber being adapted to the additional function of providing inlet valve and cutoff means for the admission of fresh charge to a fresh charge pumping de-` vice of whatever suitable type maybe employed in the operation ofa tWo'strolze cycle engine. An illustration of the piston type p uii'ipingvr chamber is shown and the `method of co-fuiictional relationship described inr my rco-'pending U. S. patent application heretofore identified by serial` number and filing date. i f

A further object of my invention being to provide in the cylinder head a cooling fluid cell, the interior of the cylinder head having partitions forming thecooling fluid cell and the fresh fuel charge passage, and to extend the fresh fuel charge passage radially at its innermost point opening through the periphery of the cylinder head withv annular form about the entire circuiiiference of the head, providing thereby the greatest possible open-- ing area for a coi-responding sleeve valvey port registration of a given sleeve valve stroke and port registration time duration.

A further object is lo provide any inlet opening in coi'iiniunication iviththe fresh fuel charge passage of the cylinder head at the outer end.` at xvhicli point a source of fuel charge supply Jmay beeasily attached, in'

addition, tlieopening` to ci'ioling fluid cellr formed inthe cylinder head is formed at the outer end of the oylindeiliead inthe saine plane as the opening of tliefresh fuel charge passage, facilitating the' i'iiacliining of ythe two opei'iii'igs by one Operation. My iniproveinents are effective in greatly simplifying the construction and iiiiproving the Oper Referringfby numerals to the ation of a two rstroke cyoleengiiie wherein sleevey valves are undertaken to supply the necessary valve function to admit a fresh fuel charge "to a prepuinping chamber and transfer the prepiiiiIpe-d charge fromy the prepumping chamber to the combustion chamber.'L

Vith the foregoing andother objects in View, my invention consists in certain novel,

features of construction which Will loe here! matter more fully described and claimed and illustrated in the accompanying drawings, in

Fig. l is a horizontal section taken on the line 4 4 of Fig. 2;

Fig. 5 is a horizontal sectionptaken oii the line 5 5 'ofFig 2;y

Fig. 6 is a horizontal section taken on the liiie 6 6 of FigxQ; f f. Fig. 7 is a horizontal section taken on the line 7 7 of FignQ;y f f Fig 8 is a horizontal line 8 8 of Fig. 2.

section taken on the y accompanying-drawings, l() designates acylinder head of my improved construction. ll. designates plan view taken On tlieoutward end of the head to which the i cooling fluid and fresh charge connections may be attached.r a recess 'l2 is formed in the central pai't ofthe head through which a' spark plug may be screived'into the threaded aperture lBffoi-ined in a boss 24 located neark y the'end of the head which is adapted tojde pend Within the sleeve cylinder ofthe en-,f`

`ginea recess lll-is formed in the eiidiface of the cylinder head adapted 'to ilormy the head yend ei'iclosure to the combustion chamber,

thissliglit recess is designed to facilitate a niore localized strata of undiluted fresh gaseous mixture being compressed adjacentthe sparking terminals atthetiine of ignition.`

Partitionsl and 16 Ioin the outside shell of the cylinder head sthrough the interior With the Wall of the recess 12, dividing the provides a duct Y17 for the passage'of 'fresh fuel charge from an opening'19 located at the top and accessible to exterior accessory Y connections tov an annular formed outlet 20 opening through the periphery of the cylinder head. The annular formed outlet being formed as a radial extension of' the fresh charge ductlT, 'lhe annular formed outlet 2O opening through the periphery of the head in one planefor the entire circumference of the head. The axis of the plane of the ,annular opening being at right angle to the axis of the machined periphery of the cylindrical body o f the head.

To increasethe volume kdistribution area of fthe base depth of the annular formed opening-2O to facilitate high volume passage efficiencyy ,from the duct part i7 of the fresh charge passage to the annular opening, the

Y crown 21 ofthe annular formed 'fresh charge passage is constructed in a planerin a position turtherheadward than the yplane of' the headward edge of the annular openingofl the 'fresh charge passagevthrough the periphery of the rcylinder, head. A` by-pass coolingV fluid cell Z2 establishes a cooling fluid cell communication between the cooling fluid cell 18 and a. cooling fluid cell Q8 yiormed of the endof the body which forms the' combustion chamber head and surrounding the spalrlrplug loss 2% bet-Ween the recess 12 and the annular' fresh fuel charge passage 20.

An opening 25 is provided in the outer face of. the head for the circulation of cool ing fluid to thel cooling fluid cell 18 and its communicativecells 22 and 23. -The peripheryof the lcylinder head is vconstructed of f tyo diameters, the step 26 being: the Vhorizontal face by Which the cylinder head is supported on the cylinder in the usual manner. Expansion ring grooves are provided in the periphery of the head adjacent the end forining the yhead enclosure to the vcombustion chamber and located between the annular fresh :charge opening 2O and the combustion chamber providing, When assembled in the sleeve valve,`an expanding seal against the bore of the sleeve-valve between the annular opening 2O of' the fresh charge passage and the combustion chamber.A

Obviously the constructionpf improved cylinder headrforsleeve lvalve internal combustion engines asherein `rshown and describedmay be varied in certain 'details Without departing from the spirit of the invention, the scope of Which -is set forth in theappended claims.

i claim as my invention:

1. ,A cylinder head for sleeve valve internal combustion engines, a hollow formed cylindric body of tivo diameter periphery, a cylindric Wall extending substantially axially with and in the center of' the body, a recess 'formed Within the said ycylindric Wall, the said recess opening through the end ol' the body having the end periphery of greatest diameter, althreaded aperture open-V from ythe Lsaid cell through the end of the. body having the cylindr-ic periphery of greatest diameter, the said passage Way Within the body openingy through the end of body which end is of Vgreatest diameter and the said passageway opening through the periphery of the body of least diameter.- 2, A cylinder head of cylindrical form,

having a cylindric end abutment of one diameter and a flange end .ofgreater diameter,-

openings formed through the said ilange end, an annular opening formed through the periphery of vrthe cylindric abutment, a passage formed through the interior ofthe he d, the said passage being in communica tion with the said annular opening -in ythe periphery and one of the said openings formed through the said flange end, a cooling fluid'cell formed Within the head and the said cooling fluid cell being in communication With an openingin the flange end of the head.

3. A cylinder head of two-diameter cylin-T dric periphery adapt-ed to a sleeve `valve `two stroke cycle Vinternal combustion engines having a gaseous mixturey fresh charge supply passage formed VWithin the head, the said gaseous mixture fresh charge ,supply passage having one opening through the end of the cylinder head, the saidend -of the head having'V the greatest diameter and a second opening through the side of the headV the periphery of which is of least diameter, the said gaseous mixture passage opening` in the side of the said head being of annular form 4in one plane at right angle to the axis ofthe cylindrical body of the cylinder head a coolingfluid cell formed Within thesaid head, and an in the head.

ln testimony whereof l aiiix my signature.

EVERETT R. BURTNETT. f

io'nition device aperture formed 

